rafdls

Atom Clojure Setup

This describes how I setup Atom for an ideal Clojure development workflow. This fixes indentation on newlines, handles parentheses, etc. The keybinding settings for enter (in keymap.cson) are important to get proper newlines with indentation at the right level. There are other helpers in init.coffee and keymap.cson that are useful for cutting, copying, pasting, deleting, and indenting Lisp expressions.

Install Atom

Download Atom

The Atom documentation is excellent. It's highly worth reading the flight manual.

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dev_dependencies:
  flutter_test:
    sdk: flutter
  mockito: 4.1.1

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when(mockGeolocator.getCurrentPosition(
            desiredAccuracy: anyNamed('desiredAccuracy'),
            locationPermissionLevel: anyNamed('locationPermissionLevel')))
        .thenAnswer((_) {
      return Future<Position>.value(Position(latitude: 20, longitude: 30));
    });

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import 'package:flutter_test/flutter_test.dart';

void main() {
  group('This list of numbers', () {
    List numberList = [1, 2, 3, 4, 5];
    test('should have the right length', () {
      expect(numberList.length, equals(5));
    });

    test('should have the correct order', () {

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import 'package:flutter/material.dart';
import 'package:flutter_unit_testing/bloc/weather_model.dart';
import 'package:intl/intl.dart';
import 'package:weather_icons/weather_icons.dart';

class MetaweatherUtil {
  String jsonToLocationId(List<dynamic> jsonList) {
    return jsonList[0]['woeid'].toString();
  }
}

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final expectedWeatherModel = WeatherModel(20, 'Sydney', 'Sunny', Icons.cloud, []);
final mapCoordinate = MapCoordinate(1.0, -1.0);
when(mockLocationRepository.getCurrentLocation())
  .thenAnswer((_) {
    return Future.value(mapCoordinate);
  });
when(mockWeatherRepository.getWeatherWithLocation(mapCoordinate))
  .thenAnswer((_) {
    return Future.value(expectedWeatherModel);
  });

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  test('testing future callback', () {
    int number = 10;
    Future<int> futureNumber = Future.value(number);
    futureNumber.then((val) {
      expect(val, 10);
    });
  });

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OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

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class App extends StatelessWidget {
  final MusicPlayer musicPlayer = DummyMusicPlayer();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        title: 'Music Player',
        theme: ThemeData(
          primarySwatch: Colors.blue,
        ),

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class HomeScreen extends StatelessWidget {
  final _planetRockUrl = 'https://stream-mz.planetradio.co.uk/planetrock.mp3';
  final _planetRockImage = 'assets/images/planet_rock.png';

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Online Radio'),
      ),